Spring



1,622,711 March 29, 1927' J, W. FRYER SPRING Filed April 3, 1926 Z/vz E/vrae JOHN 14/ Fe YER.

Patented Mar. 29, 1927.

UNITED STATES PATENT OFFICE.

SPRING.

Application filed April 3,

My invention has relation to improvements in springs that may be used in beds, seats or automobile cushions, and it consists in the novel features of construction more fully set forth in the specification and pointed out in the claim.

The present invention contemplates a spring having a fiat plate disposed over its upper end so that when a plurality of springs are placed in juxtaposition they form, a plane surface that yields to the form of any object resting thereon. Each spr ng composing a part of said plane entering into such plane supporting surface, is indi- 5 vidually adjustable vertically so that should any sag occur in the plane surface, an adjustment of the spring in the proper direction will restore such surface to its plane lhe ob ects of the invention are to provide a spring that is adjustable as above set forth-and one that when associated with others of like character readily adapts itself to the formation of a continuous plane surface, one that is durable and that may be cheaply manufactured. Further objects of the invention will be more readily apparent from a detailed description of the same in connection with the accompanying drawings, in which- Fig. 1 represents a fragment of a bed bottom embodying my improved spring; Fig. 2 represents a top plane View of my 111}- proved spring; and Fig. 3 represents a vertical longitudinal section taken on the line of Fig. 2.

Referring to the drawings, B represents a box-like bed bottom frame to the bottom a of which are secured a plurality of my improved springs S, said springs being d1sposed in juxtaposition, there being a clearance of approximately one eighth of an inch between the adjacent edges of the springs. 0 Each spring member S comprises a CO/llefl spring element 1 to the topmost turn 1 of which is secured by soldering or welding, a square plate 2, the corners 3 ofwhich extend slightly outside the circle defining the spring 1. Triangular plates 4 are hinged to the edges 5 of the plate 2, the hypotenuse of each triangle coinciding w1th one side of the square 2 that it may be said that the square plate 2 is inscribed within a large 1926. Serial No. 99,564.

square formed by the triangular corner plates 4. The function of the hinged corners l will be better apparent herein after.

The bottom turn 1 of the spring element 1 1s secured to a bottom circular plate or d1sc 6, said plate 6 having a centrally disposed boss 7 extending through which is a threaded opening 8 to receive a stud 9 projecting upwardly from a boss 10 centrally disposed on a base plate 11, the latter having a plurality of openings extending through it through which the plate 11 may be secured to the bottom a of frame B by lag-screws 12. From what has been said, it is readily apparent that the spring 1 may be caused to travel to and from the base plate 11 by rotating the same. However, owing to the close juxtaposition of the springs in the frame B, it would not be poss1hle to effect such rotation if the plates 2 and 4 were integrally formed. I have, therefore, formed the corner pieces 4- separately and hinged said corner pieces to the plate 2 so that they may be swung upwardly as shown dotted in Fig. 3 to furnish clearance between adjacent springs S for the purpose of rotating the spring to effect whatever adjustment vertically that may be necessary.

From the foregoing it is apparent that I have provided a spring that is adaptable to beds, chairs or automobile cushions which forms with its associated members, a plane surface readily yielding to pressure and conforming to the shape of any object.

Having described my invention, I claim:

A resilient member comprising a base plate, a stem projecting upwardly therefrom, a disc mounted on said stem and rotat-able to effect a vertical movement of the disc with relation to said base plate, a coiled spring secured to said disc, a plate secured to the upper turn of said spring and lying substantially within a circle defining said spring, and triangular corner plates hinged to the sides of the last mentioned plate, the hypotenuse of each corner plate'coinciding with the side of the plate to which it is secured.

In testimony whereof I hereunto affix my signature.

JOHN WALTER FRYER. 

